metre
Cadastre, engineering survey, topographic mapping (large scale).
None
China - Hong Kong - onshore and offshore.
Data Source: EPSG v11.016 2024-08-31
Datum: Hong Kong 1980
Coordinate System: cartesian
Projection: Hong Kong 1980 Grid
Geodetic CRS: Hong Kong 1980
PROJCRS["Hong Kong 1980 Grid System",
BASEGEOGCRS["Hong Kong 1980",
DATUM["Hong Kong 1980",
ELLIPSOID["International 1924",6378388,297,
LENGTHUNIT["metre",1]]],
PRIMEM["Greenwich",0,
ANGLEUNIT["degree",0.0174532925199433]],
ID["EPSG",4611]],
CONVERSION["Hong Kong 1980 Grid",
METHOD["Transverse Mercator",
ID["EPSG",9807]],
PARAMETER["Latitude of natural origin",22.3121333333333,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8801]],
PARAMETER["Longitude of natural origin",114.178555555556,
ANGLEUNIT["degree",0.0174532925199433],
ID["EPSG",8802]],
PARAMETER["Scale factor at natural origin",1,
SCALEUNIT["unity",1],
ID["EPSG",8805]],
PARAMETER["False easting",836694.05,
LENGTHUNIT["metre",1],
ID["EPSG",8806]],
PARAMETER["False northing",819069.8,
LENGTHUNIT["metre",1],
ID["EPSG",8807]]],
CS[Cartesian,2],
AXIS["northing (N)",north,
ORDER[1],
LENGTHUNIT["metre",1]],
AXIS["easting (E)",east,
ORDER[2],
LENGTHUNIT["metre",1]],
USAGE[
SCOPE["Cadastre, engineering survey, topographic mapping (large scale)."],
AREA["China - Hong Kong - onshore and offshore."],
BBOX[22.13,113.76,22.58,114.51]],
ID["EPSG",2326]]
{
"$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
"type": "ProjectedCRS",
"name": "Hong Kong 1980 Grid System",
"base_crs": {
"name": "Hong Kong 1980",
"datum": {
"type": "GeodeticReferenceFrame",
"name": "Hong Kong 1980",
"ellipsoid": {
"name": "International 1924",
"semi_major_axis": 6378388,
"inverse_flattening": 297
}
},
"coordinate_system": {
"subtype": "ellipsoidal",
"axis": [
{
"name": "Geodetic latitude",
"abbreviation": "Lat",
"direction": "north",
"unit": "degree"
},
{
"name": "Geodetic longitude",
"abbreviation": "Lon",
"direction": "east",
"unit": "degree"
}
]
},
"id": {
"authority": "EPSG",
"code": 4611
}
},
"conversion": {
"name": "Hong Kong 1980 Grid",
"method": {
"name": "Transverse Mercator",
"id": {
"authority": "EPSG",
"code": 9807
}
},
"parameters": [
{
"name": "Latitude of natural origin",
"value": 22.3121333333333,
"unit": "degree",
"id": {
"authority": "EPSG",
"code": 8801
}
},
{
"name": "Longitude of natural origin",
"value": 114.178555555556,
"unit": "degree",
"id": {
"authority": "EPSG",
"code": 8802
}
},
{
"name": "Scale factor at natural origin",
"value": 1,
"unit": "unity",
"id": {
"authority": "EPSG",
"code": 8805
}
},
{
"name": "False easting",
"value": 836694.05,
"unit": "metre",
"id": {
"authority": "EPSG",
"code": 8806
}
},
{
"name": "False northing",
"value": 819069.8,
"unit": "metre",
"id": {
"authority": "EPSG",
"code": 8807
}
}
]
},
"coordinate_system": {
"subtype": "Cartesian",
"axis": [
{
"name": "Northing",
"abbreviation": "N",
"direction": "north",
"unit": "metre"
},
{
"name": "Easting",
"abbreviation": "E",
"direction": "east",
"unit": "metre"
}
]
},
"scope": "Cadastre, engineering survey, topographic mapping (large scale).",
"area": "China - Hong Kong - onshore and offshore.",
"bbox": {
"south_latitude": 22.13,
"west_longitude": 113.76,
"north_latitude": 22.58,
"east_longitude": 114.51
},
"id": {
"authority": "EPSG",
"code": 2326
}
}
{'crs_wkt': 'PROJCRS["Hong Kong 1980 Grid System",BASEGEOGCRS["Hong Kong '
'1980",DATUM["Hong Kong 1980",ELLIPSOID["International '
'1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4611]],CONVERSION["Hong '
'Kong 1980 Grid",METHOD["Transverse '
'Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural '
'origin",22.3121333333333,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
'of natural '
'origin",114.178555555556,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
'factor at natural '
'origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
'easting",836694.05,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
'northing",819069.8,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["northing '
'(N)",north,ORDER[1],LENGTHUNIT["metre",1]],AXIS["easting '
'(E)",east,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Cadastre, '
'engineering survey, topographic mapping (large '
'scale)."],AREA["China - Hong Kong - onshore and '
'offshore."],BBOX[22.13,113.76,22.58,114.51]],ID["EPSG",2326]]',
'false_easting': 836694.05,
'false_northing': 819069.8,
'geographic_crs_name': 'Hong Kong 1980',
'grid_mapping_name': 'transverse_mercator',
'horizontal_datum_name': 'Hong Kong 1980',
'inverse_flattening': 297.0,
'latitude_of_projection_origin': 22.312133333333335,
'longitude_of_central_meridian': 114.17855555555556,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'projected_crs_name': 'Hong Kong 1980 Grid System',
'reference_ellipsoid_name': 'International 1924',
'scale_factor_at_central_meridian': 1.0,
'semi_major_axis': 6378388.0,
'semi_minor_axis': 6356911.9461279465}